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    <title>About 2D barcodes</title>
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<p><strong>Barcode Scanner</strong> also understands how to read two dimensional barcodes, like QR
    Codes and Data Matrix codes. For example, the codes below contain a hyperlink to the ZXing
    Project home page:</p>
<p class="imgcenter">
    <img src="../images/big-qr.png"/>
    <img src="../images/big-datamatrix.png"/>
    <img src="../images/big-pdf417.png"/>
    <img src="../images/big-aztec.png"/>
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<p>You can also represent contact information in a QR Code, and put it on a business card or web
    site. When you scan it, the results screen provides a choice of actions:</p>
<p class="imgcenter"><img src="../images/contact-results-screen.jpg"/></p>
<p>Besides URLs and contact info, QR Codes can also contain:</p>
<ul>
    <li>Calendar events, which you can add to your Calendar</li>
    <li>Phone numbers, which you can dial</li>
    <li>SMS numbers, which you can text message</li>
    <li>Email addresses, which you can email</li>
    <li>Geographic coordinates, which you can open in Maps</li>
    <li>Plain text, which you can read, then share with a friend</li>
</ul>
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